Bump github.com/slack-go/slack from 0.9.5 to 0.10.0

Bumps [github.com/slack-go/slack](https://github.com/slack-go/slack) from 0.9.5 to 0.10.0.
- [Release notes](https://github.com/slack-go/slack/releases)
- [Changelog](https://github.com/slack-go/slack/blob/master/CHANGELOG.md)
- [Commits](slack-go/slack@v0.9.5...v0.10.0)

---
updated-dependencies:
- dependency-name: github.com/slack-go/slack
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -3,9 +3,12 @@ module github.com/salesforce/ci-result-to-slack
 go 1.17
 
 require (
-	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/kelseyhightower/envconfig v1.4.0
+	github.com/slack-go/slack v0.10.0
+)
+
+require (
+	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/slack-go/slack v0.9.5
 	github.com/stretchr/testify v1.7.0 // indirect
 )

go.sum

@@ -12,8 +12,8 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/slack-go/slack v0.9.5 h1:j7uOUDowybWf9eSgZg/AbGx6J1OPJB6SE8Z5dNl6Mtw=
-github.com/slack-go/slack v0.9.5/go.mod h1:wWL//kk0ho+FcQXcBTmEafUI5dz4qz5f4mMk8oIkioQ=
+github.com/slack-go/slack v0.10.0 h1:L16Eqg3QZzRKGXIVsFSZdJdygjOphb2FjRUwH6VrFu8=
+github.com/slack-go/slack v0.10.0/go.mod h1:wWL//kk0ho+FcQXcBTmEafUI5dz4qz5f4mMk8oIkioQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=